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The ALICE Collaboration at the LHC reports measurement of the inclusive production cross section of electrons from semileptonic decays of beauty hadrons with rapidity |y| < 0.8 and transverse momentum 1 < p(T)< 10 GeV/c, in pp collisions at root s = 2.76 TeV. Electrons not originating from semielectronic decay of beauty hadrons are suppressed using the impact parameter of the corresponding tracks. The production cross section of beauty decay electrons is compared to the result obtained with an alternative method which uses the distribution of the azimuthal angle between heavyflavour decay electrons and charged hadrons. Perturbative QCD predictions agree with the measured cross section within the experimental and theoretical uncertainties. The integrated visible cross section, sigma(b >e) = 3.47 +/0.40(stat(+1.12)(1.33)(sys) +/0.07(norm) mu b, was extrapolated to full phase space using Fixed Order plus NexttoLeading Log (FONLL) calculations to obtain the total b (b) over bar production cross section, sigma(b (b) over bar) = 130 +/15.1(stat)(+42.1)(49.8)(sys)(+3.4)(3.1)(extr) +/2.5( norm) +/4.4(BR) mu b.

B. Abelev, J. Adam, D. Adamová, M. M. Aggarwal, G. Aglieri Rinella, M. Agnello, et al. (2014). Beauty production in pp collisions at sqrt(s) = 2.76 TeV measured via semi-electronic decays. PHYSICS LETTERS. SECTION B, 738, 97-108 [10.1016/j.physletb.2014.09.026].

Beauty production in pp collisions at sqrt(s) = 2.76 TeV measured via semi-electronic decays

A. Alici;ARCELLI, SILVIA;BASILE, MAURIZIO;BELLINI, FRANCESCA;CIFARELLI, LUISA;COLOCCI, MANUEL;GUERZONI, BARBARA;SCIOLI, GILDA;
2014

Abstract

The ALICE Collaboration at the LHC reports measurement of the inclusive production cross section of electrons from semileptonic decays of beauty hadrons with rapidity |y| < 0.8 and transverse momentum 1 < p(T)< 10 GeV/c, in pp collisions at root s = 2.76 TeV. Electrons not originating from semielectronic decay of beauty hadrons are suppressed using the impact parameter of the corresponding tracks. The production cross section of beauty decay electrons is compared to the result obtained with an alternative method which uses the distribution of the azimuthal angle between heavyflavour decay electrons and charged hadrons. Perturbative QCD predictions agree with the measured cross section within the experimental and theoretical uncertainties. The integrated visible cross section, sigma(b >e) = 3.47 +/0.40(stat(+1.12)(1.33)(sys) +/0.07(norm) mu b, was extrapolated to full phase space using Fixed Order plus NexttoLeading Log (FONLL) calculations to obtain the total b (b) over bar production cross section, sigma(b (b) over bar) = 130 +/15.1(stat)(+42.1)(49.8)(sys)(+3.4)(3.1)(extr) +/2.5( norm) +/4.4(BR) mu b.
2014
B. Abelev, J. Adam, D. Adamová, M. M. Aggarwal, G. Aglieri Rinella, M. Agnello, et al. (2014). Beauty production in pp collisions at sqrt(s) = 2.76 TeV measured via semi-electronic decays. PHYSICS LETTERS. SECTION B, 738, 97-108 [10.1016/j.physletb.2014.09.026].
B. Abelev; J. Adam; D. Adamová; M. M. Aggarwal; G. Aglieri Rinella; M. Agnello; A. Agostinelli; N. Agrawal; Z. Ahammed; N. Ahmad; A. Ahmad Masoodi; I....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/429366
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